These are vintage hats from Bolivia. Fathers knit these treasures for their sons. Without dispute, the chullus are the best example of knitting found today. Once seen in every village in the central Andes of Bolivia. hand wash in cold water and lay flat to dry. each of these pieces is unique and one of a kind - item is as in photo - this piece measures 9" across when lying flat so it's about a 18" opening.